Evaluation of root dentin cracks

The purpose of this study is to evaluate the root dentin cracks after root canal instrumentation in older patients with micro computed tomography.

Fifty teeth (age>50 yrs) patients with intact lower anterior teeth indicated for extraction and eight extracted teeth will be selected and divided into 1.Diabetic (n-20), 2.Non Diabetic (n-20) , 3.Overinstrumented (n-5) and 4.Negative control groups with no instrumentation (n-5). Overinstrumented group consists of extracted teeth with preparation beyond 3mm. In Diabtetic and Non Diabetic groups, teeth will be extracted using atraumatic technique after instrumentation. Teeth from the above groups will be subjected to Micro Computed Tomography scans for detection of microcracks in root dentin. The incidence of microcracks in each sample will be recorded and statistically analysed.